| Billy-le-Grand | |
|---|---|
| The town hall in Billy-le-Grand | |
| Coordinates: 49°06′33″N4°13′51″E / 49.1092°N 4.2308°E | |
| Country | France | 
| Region | Grand Est | 
| Department | Marne | 
| Arrondissement | Reims | 
| Canton | Mourmelon-Vesle et Monts de Champagne | 
| Intercommunality | CU Grand Reims | 
| Government | |
| • Mayor (2020–2026) | Fabien Charpentier [1] | 
| Area 1 | 7.26 km2 (2.80 sq mi) | 
| Population  (2022) [2]  | 139 | 
| • Density | 19/km2 (50/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| INSEE/Postal code |  51061 /51400 | 
| Elevation | 122 m (400 ft) | 
| 1 French Land Register data, which excludes lakes, ponds, glaciers > 1 km2 (0.386 sq mi or 247 acres) and river estuaries. | |
Billy-le-Grand is a commune of the Marne department in northeastern France.
| Year | Pop. | ±% p.a. | 
|---|---|---|
| 1968 | 56 | — | 
| 1975 | 46 | −2.77% | 
| 1982 | 53 | +2.04% | 
| 1990 | 77 | +4.78% | 
| 1999 | 99 | +2.83% | 
| 2009 | 103 | +0.40% | 
| 2014 | 126 | +4.11% | 
| 2020 | 118 | −1.09% | 
| Source: INSEE [3] | ||